APA (7th ed.) Citation

Friedman, T. L. (2006). The world is flat: A brief history of the twenty-first century (Updated and expanded ed.). Farrar, Straus and Giroux.

Chicago Style (17th ed.) Citation

Friedman, Thomas L. The World Is Flat: A Brief History of the Twenty-first Century. Updated and expanded ed. New York: Farrar, Straus and Giroux, 2006.

MLA (9th ed.) Citation

Friedman, Thomas L. The World Is Flat: A Brief History of the Twenty-first Century. Updated and expanded ed. Farrar, Straus and Giroux, 2006.